Icom P25 Quality & Reliability - Page 10

Icom Quality and Reliability LOW PRESSURE (ALTITUDE) METHOD 500.4 Use low pressure (altitude) tests to determine if radios can withstand and/or operate in a low pressure environment and/or withstand rapid pressure changes. • Procedure I - Storage/Air Transport. Procedure I is appropriate if the radio is to be transported or stored at high ground elevations or transported by air in its shipping/storage configuration. • Procedure II - Operation/Air Carriage. Use Procedure II to determine the performance of the radios under low pressure conditions. HIGH TEMPERATURE METHOD 501.4 Use high temperature tests to obtain data to help evaluate effects of high temperature conditions on radios safety, integrity, and performance. • Procedure I - Storage. Use Procedure I to investigate how high temperatures during storage affect the radios (integrity of materials, and safety/performance of the radios). • Procedure II - Operation. Use Procedure II to investigate how high ambient temperatures may affect radios performance while it is operating. LOW TEMPERATURE METHOD 502.4 Use low temperature testing to measure how low temperature conditions during storage, operation, and manipulation affect radios safety, integrity, and performance. • Procedure I - Storage. Use Procedure I to investigate how low temperatures during storage affect radios safety during and after storage, and performance after storage. • Procedure II - Operation. Use Procedure II to investigate how well the radios operates in low temperature environments. TEMPERATURE SHOCK METHOD 503.4 Use temperature shock tests to determine if radios can withstand sudden changes in the temperature of the surrounding atmosphere without experiencing physical damage or deterioration in performance. • Procedure I (Steady State) Procedure I employs constant temperature at each of the extreme shock conditions because, in many instances, the thermal shock itself so outweighs the other thermal effects that the test may be performed using two constant temperatures. Low Temperature Test Temperature Chamber Rapid Thermal Shock Chambers Icom: High Quality, Exceptional Reliability, and Global Sustainability 10